Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1bb7f47df023bb1…

MALICIOUS

PDF

67.2 KB Created: 2020-10-13 17:42:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b60084fdfc03fed5880f9d04a049ba03 SHA-1: e476159310ba4b00483bcc2f4a97d04638dad834 SHA-256: e1bb7f47df023bb1a510c5e79209e340f7dc40465d18c66ee8e9f6bf21097370
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ggtraff.ru/strik?keyword=provisional+constitution+of+bangladesh+order+1972+pdf In PDF document text
    • https://site-1039217.mozfiles.com/files/1039217/78609757102.pdfIn PDF document text
    • https://site-1039935.mozfiles.com/files/1039935/pigepejijiranepubafig.pdfIn PDF document text
    • https://site-1038538.mozfiles.com/files/1038538/52269355477.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/monirafulowafix.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/8279037.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/kirorafagosox.pdfIn PDF document text
    • https://site-1039538.mozfiles.com/files/1039538/wagelibemiguxafukusuveva.pdfIn PDF document text
    • https://site-1036977.mozfiles.com/files/1036977/gevomevefabaz.pdfIn PDF document text
    • https://site-1037916.mozfiles.com/files/1037916/35779022818.pdfIn PDF document text
    • https://site-1043970.mozfiles.com/files/1043970/41858223783.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1822/1728/files/76040557565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/4627/5752/files/cute_sea_animals_real.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000098fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98FB 6040 bytes
SHA-256: 6243685e90773cd7996454872d6ce02f654a7a9d85bdf757fbe14fe7c3d8b9ad
font_01_sfnt_off0000ad88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD88 5292 bytes
SHA-256: a30b8398a5494be1a7daa0ed204c174c2964dd3394c082404749d1865053d39e
font_02_sfnt_off0000be9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE9D 10216 bytes
SHA-256: 795186a07db8eba33a0d0512481cf0e6583070508fe7ce6837369ff180b055de
font_03_sfnt_off0000e1c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C1 17628 bytes
SHA-256: 796f3d8af261b88ca444f147dd024e93a877a6b33b1453b9d66c1d5f9dc35e79

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